import numpy

def isnans(array):
	"""
	ISNANS: figure out if an array is nan. wrapper to isnan from matlab which stupidly does not allow this test  for structures!

	   Usage:    isnans(array)

	      See also : ISNAN 
	"""

	if   isinstance(array,(tuple,list,dict)): 
		returnvalue=0
	else:
		returnvalue=numpy.isnan(array)

	return returnvalue

